Disassembly of Steering Pump
GEAR ASSEMBLY
1.
2.
(15),
proper reassembly.
Thoroughly clean outside of pump.
1. Check drive shaft spline for twisted or broken teeth.
Use a sharp tool or marker to mark across front plate
body (21) and back plate (22). This will assure
2. Inspect both drive gear (7) and idler gear (10) shafts
at bushing points and seal area for rough surfaces and
excessive wear.
3.
4.
5.
Clamp pump in a vise, with the shaft up.
Remove capscrews (11).
3. If shaft measures less than 0.748” in bushing area,
the gear assembly should be replaced (one gear as-
sembly may be replaced separately; shafts and gears
are available as assemblies only).
Remove pump from vise, hold pump in hands and
bump shaft against a wood block to separate front plate
from back plate (22). Body (21) will remain with ei-
ther front plate or back plate.
4.
Inspect gear face for scoring and excessive wear.
(15)
5. If gear width is less than 0.636”, the gear assembly
should be replaced.
6.
If front plate (15) was removed first, remove wear
plate (20) from body gear pockets.
6. Be sure snap rings are in grooves on either side of
drive and idler gears.
7.
Remove drive gear assembly (7) and idler gear as-
sembly (10) from body (21).
7. If edge of gear teeth are sharp, break edge with
emery cloth.
8.
To separate body (21) from plate it remains with, put
drive gear assembly (7) in a bushing and tap protruding
end with a plastic hammer or soft mallet.
FRONT PLATE AND BACK PLATE
1.
Oil groove in bushings in both front plate and back
9.
plate (22).
Remove O−ring (16) from front plate (15) and back
plate should be in line with dowel pin holes and 1805
apart.
10.
(15).
Remove backup−up gasket (19) from front plate
2. If I.D. of bushings in front plate (15) or back plate (22)
exceed 0.755”, front or back plate should be placed
(bushings are not available separately).
11.
Remove bearing seal (18) from front plate (15) by
prying with a sharp tool.
3. Bushings in front plate should be flush with face of
front plate.
12.
Remove molded O−ring (17) from front plate (15) by
prying with a screwdriver.
4. Check for scoring on face of back plate. If wear ex-
ceeds 0.0015”, back plate should be replaced.
13.
Remove shaft seal (12) from front plate (15) by pry-
ing with a screwdriver.
BODY
Disassembly of Back Plate Assembly (Flow Divider
1. Check inside gear pockets for excessive scoring or
wear.
/
Flow Control / Relief Valve)
1.
Remove relief valve (23) from back plate (22).
2. Body (21) should be replaced if I.D. of gear pocket ex-
ceeds 1.713”.
NOTE: Do not disassemble relief valve cartridge as-
sembly − it must be replaced as an assembly.
FLOW DIVIDER / FLOW CONTROL / RELIEF VALVE
1. Check disk (8) for wear.
2.
Remove hex plugs (1, 6) flow divider spool (3), spring
and disk (8).
(9)
2.
Check spring (9) for weakness or breakage.
Inspect Steering Pump Parts
3.
Wash back plate (22) in clean solvent, then direct
GENERAL
compressed air into relief valve and flow divider cavities
in back plate to remove any contamination.
1.
2.
Clean and dry all parts.
Remove all nicks and burrs from all parts with emery
cloth.
Reelmaster 4000−D
Page 4 − 55
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro 4000 D, Toro 98958SL |
| Download File |
|
| Document Type | Catalog |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
(0 votes, average: 0 out of 5)